Implementation of Minstrel Rate Control AlgorithmPorting Minstrel from Madwifi and Linux Kernel http://linuxwireless.org/en/developers/Documentation/mac80211/RateControl/minstrel. More...
#include "minstrel-wifi-manager.h"
Public Member Functions | |
MinstrelWifiManager () | |
virtual | ~MinstrelWifiManager () |
int64_t | AssignStreams (int64_t stream) |
Assign a fixed random variable stream number to the random variables used by this model. More... | |
virtual void | SetupPhy (Ptr< WifiPhy > phy) |
Set up PHY associated with this device since it is the object that knows the full set of transmit rates that are supported. More... | |
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WifiRemoteStationManager () | |
virtual | ~WifiRemoteStationManager () |
void | AddAllSupportedModes (Mac48Address address) |
Invoked in a STA or AP to store all of the modes supported by a destination which is also supported locally. More... | |
void | AddBasicMcs (WifiMode mcs) |
Add a given Modulation and Coding Scheme (MCS) index to the set of basic MCS. More... | |
void | AddBasicMode (WifiMode mode) |
Invoked in a STA upon association to store the set of rates which belong to the BSSBasicRateSet of the associated AP and which are supported locally. More... | |
void | AddStationHtCapabilities (Mac48Address from, HtCapabilities htcapabilities) |
Records HT capabilities of the remote station. More... | |
void | AddStationVhtCapabilities (Mac48Address from, VhtCapabilities vhtcapabilities) |
Records VHT capabilities of the remote station. More... | |
void | AddSupportedMcs (Mac48Address address, WifiMode mcs) |
Record the MCS index supported by the station. More... | |
void | AddSupportedMode (Mac48Address address, WifiMode mode) |
Invoked in a STA or AP to store the set of modes supported by a destination which is also supported locally. More... | |
void | AddSupportedPlcpPreamble (Mac48Address address, bool isShortPreambleSupported) |
Record whether the short PLCP preamble is supported by the station. More... | |
WifiTxVector | DoGetCtsToSelfTxVector (void) |
Since CTS-to-self parameters are not dependent on the station, it is implemented in wifiremote station manager. More... | |
WifiTxVector | GetAckTxVector (Mac48Address address, WifiMode dataMode) |
WifiMode | GetBasicMcs (uint32_t i) const |
Return the MCS at the given list index. More... | |
WifiMode | GetBasicMode (uint32_t i) const |
Return a basic mode from the set of basic modes. More... | |
WifiTxVector | GetBlockAckTxVector (Mac48Address address, WifiMode dataMode) |
WifiTxVector | GetCtsToSelfTxVector (const WifiMacHeader *header, Ptr< const Packet > packet) |
WifiTxVector | GetCtsTxVector (Mac48Address address, WifiMode rtsMode) |
WifiTxVector | GetDataTxVector (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fullPacketSize) |
WifiMode | GetDefaultMcs (void) const |
Return the default Modulation and Coding Scheme (MCS) index. More... | |
WifiMode | GetDefaultMode (void) const |
Return the default transmission mode. More... | |
uint8_t | GetDefaultTxPowerLevel (void) const |
uint32_t | GetFragmentationThreshold (void) const |
Return the fragmentation threshold. More... | |
uint32_t | GetFragmentOffset (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fragmentNumber) |
uint32_t | GetFragmentSize (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fragmentNumber) |
bool | GetGreenfieldSupported (Mac48Address address) const |
Return whether the station supports Greenfield or not. More... | |
WifiRemoteStationInfo | GetInfo (Mac48Address address) |
uint32_t | GetMaxSlrc (void) const |
Return the maximum STA long retry count (SLRC). More... | |
uint32_t | GetMaxSsrc (void) const |
Return the maximum STA short retry count (SSRC). More... | |
uint32_t | GetNBasicMcs (void) const |
Return the number of basic MCS index. More... | |
uint32_t | GetNBasicModes (void) const |
Return the number of basic modes we support. More... | |
WifiMode | GetNonUnicastMode (void) const |
Return a mode for non-unicast packets. More... | |
uint32_t | GetNumberOfTransmitAntennas (void) |
uint32_t | GetRtsCtsThreshold (void) const |
Return the RTS threshold. More... | |
WifiTxVector | GetRtsTxVector (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet) |
bool | GetShortPreambleSupported (Mac48Address address) const |
Return whether the station supports short PLCP preamble or not. More... | |
bool | HasHtSupported (void) const |
Return whether the device has HT capability support enabled. More... | |
bool | HasVhtSupported (void) const |
Return whether the device has VHT capability support enabled. More... | |
bool | IsAssociated (Mac48Address address) const |
Return whether the station associated. More... | |
bool | IsBrandNew (Mac48Address address) const |
Return whether the station state is brand new. More... | |
bool | IsLastFragment (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fragmentNumber) |
bool | IsWaitAssocTxOk (Mac48Address address) const |
Return whether we are waiting for an ACK for the association response we sent. More... | |
bool | NeedCtsToSelf (WifiTxVector txVector) |
Return if we need to do Cts-to-self before sending a DATA. More... | |
bool | NeedDataRetransmission (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet) |
bool | NeedFragmentation (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet) |
bool | NeedRts (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet) |
bool | NeedRtsRetransmission (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet) |
void | PrepareForQueue (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fullPacketSize) |
void | RecordDisassociated (Mac48Address address) |
Records that the STA was disassociated. More... | |
void | RecordGotAssocTxFailed (Mac48Address address) |
Records that we missed an ACK for the association response we sent. More... | |
void | RecordGotAssocTxOk (Mac48Address address) |
Records that we got an ACK for the association response we sent. More... | |
void | RecordWaitAssocTxOk (Mac48Address address) |
Records that we are waiting for an ACK for the association response we sent. More... | |
void | ReportDataFailed (Mac48Address address, const WifiMacHeader *header) |
Should be invoked whenever the AckTimeout associated to a transmission attempt expires. More... | |
void | ReportDataOk (Mac48Address address, const WifiMacHeader *header, double ackSnr, WifiMode ackMode, double dataSnr) |
Should be invoked whenever we receive the Ack associated to a data packet we just sent. More... | |
void | ReportFinalDataFailed (Mac48Address address, const WifiMacHeader *header) |
Should be invoked after calling ReportDataFailed if NeedDataRetransmission returns false. More... | |
void | ReportFinalRtsFailed (Mac48Address address, const WifiMacHeader *header) |
Should be invoked after calling ReportRtsFailed if NeedRtsRetransmission returns false. More... | |
void | ReportRtsFailed (Mac48Address address, const WifiMacHeader *header) |
Should be invoked whenever the RtsTimeout associated to a transmission attempt expires. More... | |
void | ReportRtsOk (Mac48Address address, const WifiMacHeader *header, double ctsSnr, WifiMode ctsMode, double rtsSnr) |
Should be invoked whenever we receive the Cts associated to an RTS we just sent. More... | |
void | ReportRxOk (Mac48Address address, const WifiMacHeader *header, double rxSnr, WifiMode txMode) |
void | Reset (void) |
Reset the station, invoked in a STA upon dis-association or in an AP upon reboot. More... | |
void | Reset (Mac48Address address) |
Invoked in an AP upon disassociation of a specific STA. More... | |
void | SetDefaultTxPowerLevel (uint8_t txPower) |
Set the default transmission power level. More... | |
void | SetFragmentationThreshold (uint32_t threshold) |
Sets a fragmentation threshold. More... | |
void | SetHtSupported (bool enable) |
Enable or disable HT capability support. More... | |
void | SetMaxSlrc (uint32_t maxSlrc) |
Sets the maximum STA long retry count (SLRC). More... | |
void | SetMaxSsrc (uint32_t maxSsrc) |
Sets the maximum STA short retry count (SSRC). More... | |
void | SetRtsCtsThreshold (uint32_t threshold) |
Sets the RTS threshold. More... | |
virtual void | SetupMac (Ptr< WifiMac > mac) |
Set up MAC associated with this device since it is the object that knows the full set of timing parameters (e.g. More... | |
void | SetVhtSupported (bool enable) |
Enable or disable VHT capability support. More... | |
void | UpdateFragmentationThreshold (void) |
Typically called to update the fragmentation threshold at the start of a new transmission. More... | |
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Object () | |
Constructor. More... | |
virtual | ~Object () |
Destructor. More... | |
void | AggregateObject (Ptr< Object > other) |
Aggregate two Objects together. More... | |
void | Dispose (void) |
Dispose of this Object. More... | |
AggregateIterator | GetAggregateIterator (void) const |
Get an iterator to the Objects aggregated to this one. More... | |
virtual TypeId | GetInstanceTypeId (void) const |
Implement the GetInstanceTypeId method defined in ObjectBase. More... | |
template<typename T > | |
Ptr< T > | GetObject (void) const |
Get a pointer to the requested aggregated Object. More... | |
template<typename T > | |
Ptr< T > | GetObject (TypeId tid) const |
Get a pointer to the requested aggregated Object by TypeId. More... | |
void | Initialize (void) |
Invoke DoInitialize on all Objects aggregated to this one. More... | |
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SimpleRefCount () | |
Constructor. More... | |
SimpleRefCount (const SimpleRefCount &o) | |
Copy constructor. More... | |
uint32_t | GetReferenceCount (void) const |
Get the reference count of the object. More... | |
SimpleRefCount & | operator= (const SimpleRefCount &o) |
Assignment. More... | |
void | Ref (void) const |
Increment the reference count. More... | |
void | Unref (void) const |
Decrement the reference count. More... | |
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virtual | ~ObjectBase () |
Virtual destructor. More... | |
void | GetAttribute (std::string name, AttributeValue &value) const |
Get the value of an attribute, raising fatal errors if unsuccessful. More... | |
bool | GetAttributeFailSafe (std::string name, AttributeValue &value) const |
Get the value of an attribute without raising erros. More... | |
void | SetAttribute (std::string name, const AttributeValue &value) |
Set a single attribute, raising fatal errors if unsuccessful. More... | |
bool | SetAttributeFailSafe (std::string name, const AttributeValue &value) |
Set a single attribute without raising errors. More... | |
bool | TraceConnect (std::string name, std::string context, const CallbackBase &cb) |
Connect a TraceSource to a Callback with a context. More... | |
bool | TraceConnectWithoutContext (std::string name, const CallbackBase &cb) |
Connect a TraceSource to a Callback without a context. More... | |
bool | TraceDisconnect (std::string name, std::string context, const CallbackBase &cb) |
Disconnect from a TraceSource a Callback previously connected with a context. More... | |
bool | TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb) |
Disconnect from a TraceSource a Callback previously connected without a context. More... | |
Static Public Member Functions | |
static TypeId | GetTypeId (void) |
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static TypeId | GetTypeId (void) |
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static TypeId | GetTypeId (void) |
Register this type. More... | |
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static void | Cleanup (void) |
Noop. More... | |
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static TypeId | GetTypeId (void) |
Get the type ID. More... | |
Private Types | |
typedef std::vector< std::pair< Time, WifiMode > > | TxTime |
typedef for a vector of a pair of Time, WifiMode. More... | |
Private Member Functions | |
void | AddCalcTxTime (WifiMode mode, Time t) |
Add transmission time for the given mode to an internal list. More... | |
Time | CalculateTimeUnicastPacket (Time dataTransmissionTime, uint32_t shortRetries, uint32_t longRetries) |
Estimate the time to transmit the given packet with the given number of retries. More... | |
void | CheckInit (MinstrelWifiRemoteStation *station) |
check for initializations More... | |
virtual WifiRemoteStation * | DoCreateStation (void) const |
virtual WifiTxVector | DoGetDataTxVector (WifiRemoteStation *station, uint32_t size) |
virtual WifiTxVector | DoGetRtsTxVector (WifiRemoteStation *station) |
virtual bool | DoNeedDataRetransmission (WifiRemoteStation *st, Ptr< const Packet > packet, bool normally) |
virtual void | DoReportDataFailed (WifiRemoteStation *station) |
This method is a pure virtual method that must be implemented by the sub-class. More... | |
virtual void | DoReportDataOk (WifiRemoteStation *station, double ackSnr, WifiMode ackMode, double dataSnr) |
This method is a pure virtual method that must be implemented by the sub-class. More... | |
virtual void | DoReportFinalDataFailed (WifiRemoteStation *station) |
This method is a pure virtual method that must be implemented by the sub-class. More... | |
virtual void | DoReportFinalRtsFailed (WifiRemoteStation *station) |
This method is a pure virtual method that must be implemented by the sub-class. More... | |
virtual void | DoReportRtsFailed (WifiRemoteStation *station) |
This method is a pure virtual method that must be implemented by the sub-class. More... | |
virtual void | DoReportRtsOk (WifiRemoteStation *station, double ctsSnr, WifiMode ctsMode, double rtsSnr) |
This method is a pure virtual method that must be implemented by the sub-class. More... | |
virtual void | DoReportRxOk (WifiRemoteStation *station, double rxSnr, WifiMode txMode) |
This method is a pure virtual method that must be implemented by the sub-class. More... | |
uint32_t | FindRate (MinstrelWifiRemoteStation *station) |
Time | GetCalcTxTime (WifiMode mode) const |
uint32_t | GetNextSample (MinstrelWifiRemoteStation *station) |
void | InitSampleTable (MinstrelWifiRemoteStation *station) |
virtual bool | IsLowLatency (void) const |
void | PrintSampleTable (MinstrelWifiRemoteStation *station) |
void | PrintTable (MinstrelWifiRemoteStation *station) |
void | RateInit (MinstrelWifiRemoteStation *station) |
void | UpdateRetry (MinstrelWifiRemoteStation *station) |
void | UpdateStats (MinstrelWifiRemoteStation *station) |
Private Attributes | |
TxTime | m_calcTxTime |
to hold all the calculated TxTime for all modes More... | |
double | m_ewmaLevel |
exponential weighted moving average More... | |
double | m_lookAroundRate |
the % to try other rates than our current rate More... | |
uint32_t | m_nsupported |
modes supported More... | |
uint32_t | m_pktLen |
packet length used for calculate mode TxTime More... | |
uint32_t | m_sampleCol |
number of sample columns More... | |
Ptr< UniformRandomVariable > | m_uniformRandomVariable |
Time | m_updateStats |
how frequent do we calculate the stats (1/10 seconds) More... | |
Additional Inherited Members | |
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typedef void(* | PowerChangeTracedCallback) (uint8_t power, Mac48Address remoteAddress) |
TracedCallback signature for power change events. More... | |
typedef void(* | RateChangeTracedCallback) (uint32_t rate, Mac48Address remoteAddress) |
TracedCallback signature for rate change events. More... | |
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virtual void | DoDispose (void) |
Destructor implementation. More... | |
bool | GetAggregation (const WifiRemoteStation *station) const |
Return whether the given station supports A-MPDU. More... | |
uint32_t | GetChannelWidth (const WifiRemoteStation *station) const |
Return the channel width supported by the station. More... | |
bool | GetGreenfield (const WifiRemoteStation *station) const |
Return whether the station supports Greenfield or not. More... | |
uint32_t | GetLongRetryCount (const WifiRemoteStation *station) const |
Return the long retry limit of the given station. More... | |
Ptr< WifiMac > | GetMac (void) const |
Return the WifiMac. More... | |
WifiMode | GetMcsSupported (const WifiRemoteStation *station, uint32_t i) const |
Return the WifiMode supported by the specified station at the specified index. More... | |
uint32_t | GetNess (const WifiRemoteStation *station) const |
uint32_t | GetNMcsSupported (const WifiRemoteStation *station) const |
Return the number of MCS supported by the given station. More... | |
uint32_t | GetNSupported (const WifiRemoteStation *station) const |
Return the number of modes supported by the given station. More... | |
uint32_t | GetNumberOfReceiveAntennas (const WifiRemoteStation *station) const |
Return the number of receive antennas the station has. More... | |
uint32_t | GetNumberOfTransmitAntennas (const WifiRemoteStation *station) const |
Return the number of transmit antennas the station has. More... | |
Ptr< WifiPhy > | GetPhy (void) const |
Return the WifiPhy. More... | |
bool | GetShortGuardInterval (const WifiRemoteStation *station) const |
Return whether the given station supports short guard interval. More... | |
bool | GetShortPreamble (const WifiRemoteStation *station) const |
Return whether the station supports short PLCP preamble or not. More... | |
uint32_t | GetShortRetryCount (const WifiRemoteStation *station) const |
Return the short retry limit of the given station. More... | |
bool | GetStbc (const WifiRemoteStation *station) const |
Return whether the given station supports space-time block coding (STBC). More... | |
WifiMode | GetSupported (const WifiRemoteStation *station, uint32_t i) const |
Return whether mode associated with the specified station at the specified index. More... | |
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Object (const Object &o) | |
Copy an Object. More... | |
virtual void | DoInitialize (void) |
Initialize() implementation. More... | |
virtual void | NotifyNewAggregate (void) |
Notify all Objects aggregated to this one of a new Object being aggregated. More... | |
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void | ConstructSelf (const AttributeConstructionList &attributes) |
Complete construction of ObjectBase; invoked by derived classes. More... | |
virtual void | NotifyConstructionCompleted (void) |
Notifier called once the ObjectBase is fully constructed. More... | |
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static TypeId | GetObjectIid (void) |
Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. More... | |
Implementation of Minstrel Rate Control Algorithm
Porting Minstrel from Madwifi and Linux Kernel http://linuxwireless.org/en/developers/Documentation/mac80211/RateControl/minstrel.
ns3::MinstrelWifiManager is accessible through the following paths with Config::Set and Config::Connect:
No TraceSources are defined for this type.
Size of this type is 320 bytes (on a 64-bit architecture).
Definition at line 79 of file minstrel-wifi-manager.h.
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private |
typedef for a vector of a pair of Time, WifiMode.
(Essentially a list for WifiMode and its corresponding transmission time to transmit a reference packet.
Definition at line 180 of file minstrel-wifi-manager.h.
ns3::MinstrelWifiManager::MinstrelWifiManager | ( | ) |
Definition at line 120 of file minstrel-wifi-manager.cc.
References m_nsupported, and m_uniformRandomVariable.
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virtual |
Definition at line 127 of file minstrel-wifi-manager.cc.
Add transmission time for the given mode to an internal list.
mode | Wi-Fi mode |
t | transmission time |
Definition at line 170 of file minstrel-wifi-manager.cc.
References m_calcTxTime.
Referenced by SetupPhy().
int64_t ns3::MinstrelWifiManager::AssignStreams | ( | int64_t | stream | ) |
Assign a fixed random variable stream number to the random variables used by this model.
Return the number of streams (possibly zero) that have been assigned.
stream | first stream index to use |
Definition at line 147 of file minstrel-wifi-manager.cc.
References m_uniformRandomVariable, NS_LOG_FUNCTION, and ns3::RandomVariableStream::SetStream().
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private |
Estimate the time to transmit the given packet with the given number of retries.
This function is "roughly" the function "calc_usecs_unicast_packet" in minstrel.c in the madwifi implementation.
The basic idea is that, we try to estimate the "average" time used to transmit the packet for the given number of retries while also accounting for the 802.11 congestion window change. The original code in the madwifi seems to estimate the number of backoff slots as the half of the current CW size.
There are four main parts:
Definition at line 845 of file minstrel-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetMac(), ns3::NanoSeconds(), and NS_LOG_FUNCTION.
Referenced by RateInit().
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private |
check for initializations
Definition at line 202 of file minstrel-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetNSupported(), InitSampleTable(), ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_minstrelTable, m_nsupported, m_sampleCol, ns3::MinstrelWifiRemoteStation::m_sampleTable, PrintSampleTable(), PrintTable(), and RateInit().
Referenced by DoGetDataTxVector(), DoNeedDataRetransmission(), DoReportDataFailed(), DoReportDataOk(), and DoReportFinalDataFailed().
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privatevirtual |
Implements ns3::WifiRemoteStationManager.
Definition at line 176 of file minstrel-wifi-manager.cc.
References ns3::MinstrelWifiRemoteStation::m_col, ns3::MinstrelWifiRemoteStation::m_err, ns3::MinstrelWifiRemoteStation::m_index, ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_nextStatsUpdate, ns3::MinstrelWifiRemoteStation::m_packetCount, ns3::MinstrelWifiRemoteStation::m_retry, ns3::MinstrelWifiRemoteStation::m_sampleCount, ns3::MinstrelWifiRemoteStation::m_sampleRate, ns3::MinstrelWifiRemoteStation::m_sampleRateSlower, ns3::MinstrelWifiRemoteStation::m_shortRetry, ns3::MinstrelWifiRemoteStation::m_txrate, m_updateStats, and ns3::Simulator::Now().
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privatevirtual |
station | the station that we need to communicate |
size | size of the packet or fragment we want to send |
Note: This method is called before sending a unicast packet or a fragment of a unicast packet to decide which transmission mode to use.
Implements ns3::WifiRemoteStationManager.
Definition at line 473 of file minstrel-wifi-manager.cc.
References CheckInit(), ns3::WifiRemoteStationManager::GetAggregation(), ns3::WifiRemoteStationManager::GetChannelWidth(), ns3::WifiRemoteStationManager::GetDefaultTxPowerLevel(), ns3::WifiRemoteStationManager::GetLongRetryCount(), ns3::WifiRemoteStationManager::GetSupported(), ns3::MinstrelWifiRemoteStation::m_initialized, m_nsupported, ns3::MinstrelWifiRemoteStation::m_txrate, and UpdateStats().
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privatevirtual |
station | the station that we need to communicate |
Note: This method is called before sending an rts to a station to decide which transmission mode to use for the rts.
Implements ns3::WifiRemoteStationManager.
Definition at line 495 of file minstrel-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetAggregation(), ns3::WifiRemoteStationManager::GetChannelWidth(), ns3::WifiRemoteStationManager::GetDefaultTxPowerLevel(), ns3::WifiRemoteStationManager::GetShortRetryCount(), ns3::WifiRemoteStationManager::GetSupported(), ns3::MinstrelWifiRemoteStation::m_txrate, and NS_LOG_DEBUG.
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privatevirtual |
station | the station that we need to communicate |
packet | the packet to send |
normally | indicates whether the normal 802.11 data retransmission mechanism would request that the data is retransmitted or not. |
Note: This method is called after a unicast packet transmission has been attempted and has failed.
Reimplemented from ns3::WifiRemoteStationManager.
Definition at line 509 of file minstrel-wifi-manager.cc.
References CheckInit(), ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_minstrelTable, and ns3::MinstrelWifiRemoteStation::m_sampleRate.
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privatevirtual |
This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
station | the station that we failed to send DATA |
Retry Chain table is implemented here
Try | LOOKAROUND RATE | NORMAL RATE
1 | Best throughput | Random rate | Best throughput 2 | Random rate | Best throughput | Next best throughput 3 | Best probability | Best probability | Best probability 4 | Lowest Baserate | Lowest baserate | Lowest baserate
Note: For clarity, multiple blocks of if's and else's are used After a failing 7 times, DoReportFinalDataFailed will be called
Implements ns3::WifiRemoteStationManager.
Definition at line 252 of file minstrel-wifi-manager.cc.
References CheckInit(), ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_minstrelTable, ns3::MinstrelWifiRemoteStation::m_sampleRate, ns3::MinstrelWifiRemoteStation::m_sampleRateSlower, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, and PrintTable().
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privatevirtual |
This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
station | the station that we successfully sent RTS |
ackSnr | the SNR of the ACK we received |
ackMode | the WifiMode the receiver used to send the ACK |
dataSnr | the SNR of the DATA we sent |
Implements ns3::WifiRemoteStationManager.
Definition at line 404 of file minstrel-wifi-manager.cc.
References CheckInit(), FindRate(), ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_minstrelTable, m_nsupported, ns3::MinstrelWifiRemoteStation::m_packetCount, ns3::MinstrelWifiRemoteStation::m_sampleRateSlower, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateRetry().
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privatevirtual |
This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
station | the station that we failed to send DATA |
Implements ns3::WifiRemoteStationManager.
Definition at line 436 of file minstrel-wifi-manager.cc.
References CheckInit(), FindRate(), ns3::MinstrelWifiRemoteStation::m_err, ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_minstrelTable, m_nsupported, ns3::MinstrelWifiRemoteStation::m_sampleRateSlower, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateRetry().
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privatevirtual |
This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
station | the station that we failed to send RTS |
Implements ns3::WifiRemoteStationManager.
Definition at line 244 of file minstrel-wifi-manager.cc.
References ns3::MinstrelWifiRemoteStation::m_err, and UpdateRetry().
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This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
station | the station that we failed to send RTS |
Implements ns3::WifiRemoteStationManager.
Definition at line 229 of file minstrel-wifi-manager.cc.
References ns3::MinstrelWifiRemoteStation::m_shortRetry, ns3::MinstrelWifiRemoteStation::m_txrate, and NS_LOG_DEBUG.
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This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
station | the station that we successfully sent RTS |
ctsSnr | the SNR of the CTS we received |
ctsMode | the WifiMode the receiver used to send the CTS |
rtsSnr | the SNR of the RTS we sent |
Implements ns3::WifiRemoteStationManager.
Definition at line 238 of file minstrel-wifi-manager.cc.
References NS_LOG_DEBUG.
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This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
station | the station that sent the DATA to us |
rxSnr | the SNR of the DATA we received |
txMode | the WifiMode the sender used to send the DATA |
Implements ns3::WifiRemoteStationManager.
Definition at line 222 of file minstrel-wifi-manager.cc.
References NS_LOG_FUNCTION.
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if we are below the target of look around rate percentage, look around note: do it randomly by flipping a coin instead sampling all at once until it reaches the look around rate
This if condition is used to make sure that we don't need to use the sample rate it is the same as our current rate
Definition at line 576 of file minstrel-wifi-manager.cc.
References ns3::RandomVariableStream::GetInteger(), GetNextSample(), ns3::WifiRemoteStationManager::GetSupported(), ns3::MinstrelWifiRemoteStation::m_isSampling, m_lookAroundRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_minstrelTable, m_nsupported, ns3::MinstrelWifiRemoteStation::m_packetCount, ns3::MinstrelWifiRemoteStation::m_sampleCount, ns3::MinstrelWifiRemoteStation::m_sampleRate, ns3::MinstrelWifiRemoteStation::m_sampleRateSlower, ns3::MinstrelWifiRemoteStation::m_txrate, m_uniformRandomVariable, NS_LOG_DEBUG, and NS_LOG_FUNCTION.
Referenced by DoReportDataOk(), and DoReportFinalDataFailed().
Definition at line 155 of file minstrel-wifi-manager.cc.
References m_calcTxTime, NS_ASSERT, and ns3::Seconds().
Referenced by RateInit().
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Definition at line 556 of file minstrel-wifi-manager.cc.
References ns3::MinstrelWifiRemoteStation::m_col, ns3::MinstrelWifiRemoteStation::m_index, m_nsupported, m_sampleCol, and ns3::MinstrelWifiRemoteStation::m_sampleTable.
Referenced by FindRate().
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Definition at line 85 of file minstrel-wifi-manager.cc.
References m_ewmaLevel, m_lookAroundRate, m_pktLen, m_sampleCol, m_updateStats, ns3::MakeDoubleAccessor(), ns3::MakeTimeAccessor(), ns3::MakeTimeChecker(), ns3::Seconds(), and ns3::TypeId::SetParent().
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The next two lines basically tries to generate a random number between 0 and the number of available rates
Definition at line 871 of file minstrel-wifi-manager.cc.
References ns3::RandomVariableStream::GetInteger(), ns3::MinstrelWifiRemoteStation::m_col, ns3::MinstrelWifiRemoteStation::m_index, m_nsupported, m_sampleCol, ns3::MinstrelWifiRemoteStation::m_sampleTable, m_uniformRandomVariable, and NS_LOG_DEBUG.
Referenced by CheckInit().
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Note: In this context, low vs high latency is defined in IEEE 802.11 Rate Adaptation: A Practical Approach, by M. Lacage, M.H. Manshaei, and T. Turletti.
Implements ns3::WifiRemoteStationManager.
Definition at line 550 of file minstrel-wifi-manager.cc.
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Definition at line 903 of file minstrel-wifi-manager.cc.
References m_nsupported, m_sampleCol, ns3::MinstrelWifiRemoteStation::m_sampleTable, and NS_LOG_DEBUG.
Referenced by CheckInit().
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Definition at line 921 of file minstrel-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetSupported(), ns3::MinstrelWifiRemoteStation::m_minstrelTable, m_nsupported, and NS_LOG_DEBUG.
Referenced by CheckInit(), and DoReportDataFailed().
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Definition at line 808 of file minstrel-wifi-manager.cc.
References CalculateTimeUnicastPacket(), GetCalcTxTime(), ns3::WifiRemoteStationManager::GetSupported(), ns3::MinstrelWifiRemoteStation::m_minstrelTable, m_nsupported, ns3::MilliSeconds(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Seconds().
Referenced by CheckInit().
Set up PHY associated with this device since it is the object that knows the full set of transmit rates that are supported.
phy | the PHY of this device |
Reimplemented from ns3::WifiRemoteStationManager.
Definition at line 132 of file minstrel-wifi-manager.cc.
References AddCalcTxTime(), ns3::WifiPhy::CalculateTxDuration(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetMode(), ns3::WifiPhy::GetNModes(), m_pktLen, ns3::NORMAL_MPDU, NS_LOG_FUNCTION, ns3::WifiTxVector::SetMode(), ns3::WifiRemoteStationManager::SetupPhy(), and ns3::WIFI_PREAMBLE_LONG.
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Definition at line 465 of file minstrel-wifi-manager.cc.
References ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_retry, and ns3::MinstrelWifiRemoteStation::m_shortRetry.
Referenced by DoReportDataOk(), DoReportFinalDataFailed(), and DoReportFinalRtsFailed().
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calculate the probability of success assume probability scales from 0 to 18000
See: http://wireless.kernel.org/en/developers/Documentation/mac80211/RateControl/minstrel/
Analysis of information showed that the system was sampling too hard at some rates. For those rates that never work (54mb, 500m range) there is no point in sending 10 sample packets (< 6 ms time). Consequently, for the very very low probability rates, we sample at most twice.
Definition at line 662 of file minstrel-wifi-manager.cc.
References ns3::Time::GetMicroSeconds(), ns3::WifiRemoteStationManager::GetSupported(), m_ewmaLevel, ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_minstrelTable, ns3::MinstrelWifiRemoteStation::m_nextStatsUpdate, m_nsupported, ns3::MinstrelWifiRemoteStation::m_txrate, m_updateStats, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Seconds().
Referenced by DoGetDataTxVector().
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to hold all the calculated TxTime for all modes
Definition at line 182 of file minstrel-wifi-manager.h.
Referenced by AddCalcTxTime(), and GetCalcTxTime().
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exponential weighted moving average
Definition at line 185 of file minstrel-wifi-manager.h.
Referenced by GetTypeId(), and UpdateStats().
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the % to try other rates than our current rate
Definition at line 184 of file minstrel-wifi-manager.h.
Referenced by FindRate(), and GetTypeId().
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modes supported
Definition at line 188 of file minstrel-wifi-manager.h.
Referenced by CheckInit(), DoGetDataTxVector(), DoReportDataOk(), DoReportFinalDataFailed(), FindRate(), GetNextSample(), InitSampleTable(), MinstrelWifiManager(), PrintSampleTable(), PrintTable(), RateInit(), and UpdateStats().
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packet length used for calculate mode TxTime
Definition at line 187 of file minstrel-wifi-manager.h.
Referenced by GetTypeId(), and SetupPhy().
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number of sample columns
Definition at line 186 of file minstrel-wifi-manager.h.
Referenced by CheckInit(), GetNextSample(), GetTypeId(), InitSampleTable(), and PrintSampleTable().
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Definition at line 191 of file minstrel-wifi-manager.h.
Referenced by AssignStreams(), FindRate(), InitSampleTable(), and MinstrelWifiManager().
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how frequent do we calculate the stats (1/10 seconds)
Definition at line 183 of file minstrel-wifi-manager.h.
Referenced by DoCreateStation(), GetTypeId(), and UpdateStats().